There are many tools in the Google ecosystem that can be used to support digital teaching and learning. The key is to find an entry point that works for you. Here is one possible system for digital learning that leverages the Google Apps ecosystem.
Sites - central hub
Drive/Docs - creating/sharing/collaborating
Apps- goodies that super charge learning
Video - creating, publishing lessons/tutorials
Blogger-reflective journalling
G+ Communities & HangOuts - online community